freeman



No. 607,924. Patented July 26, 1898:.

. E. T. FREEMAN.

NAILING MACHINE.

(Application filed Feb. 15, 1897.) (No Model.) 4 Sheets-Sheet WiTNEESBB INVBNTUY Mae/QM V @flfiW JMM! Patented July 26, 1898. E. T. FREEMAN.

NAILING MACHINE.

(Application filed Feb. 15, 1897.)

4 $,haats-Sheet 2.

(No Model.)

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INVEINIDT VHNEEBES No. 607,924. Patented July 26, I898.

E. T. FREEMAN.

NAILING MACHINE.

(Application filed Feb. 15, 1897.)

(No Model.) 4 SheetsQSheet 3 THE: NORRIS PETERS cu. PHDTG-LITHQ, WASNINGTON, n, c

Nn.607,924. Patented July 26, I898. E T FREEMAN NAILING MACHINE.

(Application filed Feb. 15, 1897.)

(No Model.) I

4 Sheets-Sheet 4.

INYEIN-IDI" I I 4 O Yyfimassas EDWVIN TI-I EOPI-IILUS FREEMAN, OF HALIFAX, CANADA.

NAlLlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 607,924, dated July 26, 1898.

A licati n fil d February 15, 1897. Serial No. 628,543.

To all whom it may concern.-

Be it known that I, EDWIN THEOPHILUS FREEMAN, of Halifax, in the county of Halifax and Province of Nova Scotia,0anada, have invented certain new and useful Improvements in Nailing-Machines, of which the following,

matically adjustable to the varying thick nesses of the stock, and the nose-plate automatically moved from the stock-support at the stopping of the machine, so as to permit the stock to be removed, and, if desired, replaced by another, and the nose-plate at the starting of the machine moved toward the stock-support.

Other important features of my invention consist of the combinations of the cams and levers operating the awl and the wire-feeding mechanism.

Another feature of my invention consists of the means whereby the awl is forced to feed the stock.

Another important feature of my invention consists of the mechanism which by connection periodically depresses the stock-support.

In the accompanying drawings, Figure 1 is a right-hand side elevation of a machine embodying my invention, showing the noseplate in its lower position and the upper end of the column in section. Fig. 2 is a left-hand side elevation, partly in section, of the head portion of the machine, showing the nose-plate in its upper position. Fig. 3 is a front view showing the nose-plate, the adjustable stockfeeding mechanism, and a nail-carrier and a wire-feeding mechanism. Fig. 4= is a view, partlyin section, of the nail-carrier and front end of the lever operating the nailcarrier.

Fig. 5 is a view of the cam and lever which operate the nail-carrier lever, the cam being shown in section. Fig. 6 is a view of a cam and of a block operated by the cam, whereby vertical motions are given to the awl-carry- 1ng and Wire-feeding levers, the cam being shown in section. Fig. 7 is a view of'part of mechanism whereby the stocksupport is periodically depressed.

(No model.)

The same letters of reference indicate the same or similar parts in all the figures.

I The frame a is mounted on a column a and has the front and middle bearings a and a for the shaft a An arm a is bolted to the frame a andhas the third bearing a for the shaft a On the front end on the shaft a is a crank 12, which carries a rod 6. This rod is connected by connection 6 to a bar 5 which bar carriesthe driver 19 and is guided in vertical bearings 19 and b and which is by its connection to the crank given a reciprocating motion.

The driver 19 enters a nail-guide cin its downward movement and drives a nail that is in the guide through a perforation in the nose-plate c and into stock, which is held by a stock-support 0 against the nose-plate. The nail-guide 0 extends through a nail-carrier c, which is guided between an upper partd and a lower part c of the nose-plate. When the driver is withdrawn from the nailguide, thenail-carrier is moved from the driver by a lever 0 and when stopped at its extreme outer position the wire d is fed a proper length through a perforation d and v into the nail-guide. After the wire is fed into the nail-guide the nail-carrier is moved toward and into line with the driver, thereby causing a nailto be cut from the wire by the sides of the perforation d and the nailguide 0 and carried in the nail-guide into line with the driver.

Studs q extend; from the lower part c of the nose-plate c and into vertical bearings in the franle d.

Thereby the nose-plate is prevented from lateral movements, but capable of vertical movements. From the upper part (Z of the nose-plate project ears g to which the lower end of a bar g of a toggle-joint p is attached. The upper end of a bar qtof the toggle joint is hung on a stationary stud 1 A bar q is attached to the toggle-joint and to one end of a lever 19. This lever is slotted where hung on a stud "g so as to be permitted to be both slid and turned on the stud. The end r of the lever is pivotally attached to a rod 19 which is pivotally attached to a treadle r and carries at its upper end an inclined block r. When the treadle r is op- ICO erated to raise the rod 19 the inclined block r forces in a well-known manner the driv ing-pulley r against a friction-wheel 0*, which is firmly mounted on the shaft a thereby causing the starting of the machine if power is transmitted to the driving-pulley. The front end of the lever 19 is moved forward and downward when the machine is started by the raising of the rod 19 Thereby the bars in the toggle-joint p are moved into line with each other, thereby forcing the noseplate a downward. hen the treadle r is released, the rod 13 is lowered and a spring 25 is permitted to move the driving-pulley out of contact with the friction-wheel and the bars of the toggle-joint p are moved out of line with each other. Thereby, respectively, the machine is stopped and the nose-plate raised.

The lever c is pivotally attached to the frame a at c and has its front end extending into a groove d, which extends vertically in the nail-carrier c and is adapted to permit the nail-carrier to be moved vertically by the nose-plate without altering the position of the lever 0 but does not permit the lever c to be moved laterally without moving the nail-carrier. The lever c is moved laterally by a lever e, which levers are connected by a universal joint e The lever e is hung on a stud e and has arms e and 0 extending upward, one on each side of a cam e,which is mounted on the shaft a. The arm 6 has two bearings, one on each side of the fiat surface of the cam, for a camroller f. The arm 6 has two bearings for a shorter can1-rollerf Both of these cam-rollers are in contact with the periphery of the cam c. This cam has a projection f projecting from its periphery. Through the middle of the Width of this projection extends a groove f which is wider than the length of the cam-roller f including the bearings for the cam-roller. The radius to the bottom of this groove is equal to the radius of the cam proper. In the middle portion of the periphery of the cam on the side opposite to the projection f is a groove f which has its width equal to the width of the groove f and which has its bottom a distance from the periphery of the projection f equal to the diameter of the cam proper.

When the cam c is revolved and the projection f reaches the cam-roller f, the camroller is moved from the center of the cam. Thereby the upper end of the lever is moved in the same direction, and the cam-roller f is held in contact with the bottom of the groove f, as the sides of the groove pass one on each side of the cam-roller, and the distance between the periphery of the projection f and the bottom of the groove f is equal to the diameter of the cam proper. It will be seen that the projection f passes the cam-roller f without moving the cam-roller, as the sides of the groove f pass one on each side of the cam-roller. This cam, with its two cam-rollers, gives a more steady positive motion than cams in general use, as two cam-rollers are Iused and both are in contact with the cam during the entire revolution of the cam and both having bearings, one at each end, in the same lever. Thus an even pressure is given to each end of the cam-rollers and also to the lever having the bearings for the cam-rollers, as the middle of the length of the cam-rollers and the longitudinal center of the lever are in line with the middle of the width of the periphery of the cam.

A wire-feeding lever d is at its rear end hung on one end of a stud g. This stud has its bearing, in which it can be turned, in the frame a and has its other end forked, in which fork the rear end of an awl-carrying lever g is turned laterally on a stud 9 The levers d and g are moved vertically by connection to a block 9 which block has two cam-rollers fand f in contact with a cam g This cam is similar to the cam 6 and the cam-rollers f and f are similar and placed similar, respectively, to the cam-rollers f and P, with the exception that one cam-roller is placed in the block above the center of the shaft a, on which the cam is mounted, and the other placed in the block below the center of the shaft. Thereby the block is given a vertically-reciprocating motion. An arm g extends from the block g and into a bearing 72/ in which it is capable of vertical movement, but prevented from lateral movement. Thereby the arm is acting as a guide for the block when moved by the cam.

The lever d is connected to the block 9 by an arm h, which is pivotally attached to the lever, and also at h" pivotally attached to the block. The other lever is connected to the block by an arm h,which is pivotally attached to the lever, and also at 72 pivotally attached to the block, and which is jointed at 71 and 71 so as to permit the lever to be moved both vertically and laterally.

The wire d is coiled upon a reel 2' and passes through an inclined perforation i and into the perforation 61 which extends through the upper part of the nose-plate. The perforation 2' extends through the lever (1 and when the lever 01 is moved downward an inclined toothed block 2' in the perforation 2' binds in a well-known manner the wire to the lever'. Thereby the wire is fed into the nailguide. When the movement of the lever is reversed, the block 2' loses its hold on the wire, which is insured from upward movements in a well-known manner by an inclined toothed block 1 which has its position in an inclined perforation 1', extending through a stationary block i through which perforation the wire also passes.

The awlj is carried in a well-known manner by the front end of the lever g and is forced by the vertical movement of the lever to puncture the stock supported by the stocksupport 0 and to withdraw from the stock. When the awl is forced into the stock, the end of the lever g carrying the awl is moved by a sliding block it toward the driver I), thereby causing the awl to move the stock.

When the awl comes into line with the driver, the movement of the lever is stopped and the awl withdrawn from the stock, and the sliding block moves the lever in the oppositedirection. In the sliding block is a groove m, through which the lever 9 extends and in which the lever is prevented from lateral movement, but capable of a vertical movement. The sliding block is slid in a groove m and has a roller u (shown in dotted lines in Fig. 3) pivotally attached to it. The end it of a lever j, which is forked, fits over the roller 'Lt'. Thereby the sliding block is slid when the lever is moved bya cam 7' In the lever 7' is a longitudinal slot 76', and a stud 713 provided with a shoulder, extends through the slot and is firmly secured by a nut to the lever. This stud It extends through a perforation in a stud F, in which the stud is capable of being turned. The stud t has a shank extending through a vertical slot t and is secured to the frame by a nut The slot 1? is made in a part i of the frame, which part is sloping toward the sliding block it.

On the upper end of the lever j are arms 70 and M, which are similar to the arms 6* and e and carry cam-rollers k and 10 These cam-rollers are in contact with a cam 7' and are similar to the cam-rollers f and f and the cam 7' is similar to the cam e.

The extent of the feeding of the stock by the awl can be regulated by the raising and lowering of the studs 16 and t in their respective slots. If they are raised, the extent of the movement of the lower end of the lever 7' will be longer, and if moved downward the extent of the movement will be shorter. Consequently the awl, which moves the stock, is moved accordingly by its connection to the lever. If the partfi, having the slot i was not sloping or giving a proper angle to the frame, the difference of the movement of the awl would be at both the ends of the movement. Consequently the perforation left in the stock by the awl would not be in line with the driver and the nail driven on one side thereof.

The stock-support c is connected by a treadle p to a rod 0 which is surrounded by a coil-spring 19 By the tendency of this spring the stock-support is forced to press the stock against the nose-plate. On the upper end of this rod is a toothed rack 01., which is guided by a plate 19 and parts 0 and p of the column a and which engages a segment-gear m. This segment-gear is hung on a stud n in the forked end 71 of a lever m which lever is also hung on the stud M,

'which stud has its hearings in the column a.

The other end of the lever m is held in con tact with a vertical rod m which has a cam roller at its upper end in contact with a cam m and which is guided in a bearing n. In the segment-gear m is a semicircular slot 0, and in the lever m in line withthe slot 0, is a slot n similar to the slot 0. The inner side 0 of the slot 0 and the outer side 0 of the slot at are eccentric to each other, they being farthest apart at their upper ends. A roller m is placed in the slots with the ends extending outside the lever and above two bolts 0 one end over each bolt. Two coil-springs o are attached to the roller and to stationary parts ofthe machine. The tendency of these springs is to force the roller downward and into contact with the upper ends of the bolts 0 When the rod m is depressed by the cam m the end of the lever m having the slot 12 is raised, and the roller m is clamped between the sides 0 and o of the slots when that part of the slot n reaches the roller, when the distance between the sides 0 and o is equal to the diameter of the roller.

It will be seen that by the clamping of the roller m between parts of the segment-gear and the lever m the segment-gear is forced to turn on its fulcrum the remaining part of the upward movement of the end of the lever having said part, thereby causing the rod 0 to be raised against the influence of the spring p and the stock-support to be depressed. When the movement of the leverm is reversed and the roller m reaches the bolts 0 the roller is forced by the bolts out of its clamping position and held there until said part of the slot n in the next movement reaches the roller. By this periodical movement the stock-support provides for varying thicknesses of stock by the awl, as the lateral movement of the awl toward the driver corresponds with the periodic depressing of the stock-support. By the lowering or raising of the bolts 0 the extent of the periodical depressing of the stocksupport can be adjusted to any suitable length. a

Having thus described my invention, what I claim is 1. In a nailing-machine, in combination, a movable stock support automatically adjustable to the varying thicknesses of stock, a nose-plate, and starting and stopping mechanism connected with said nose-plate and operating the nose-plate, for the purpose set forth.

2. In a nailing-machine, a movable noseplate, starting and stopping mechanism con .nected with said nose-plate, and a nail-carrier guided by said nose-plate, for the purpose set forth.

8. In a nailing-machine, in combination, a vertically-movable stock-support periodically depressed and adapted to automatically pro vide for varying thicknesses of stock, a noseplate, and starting and stopping mechanism by connecting mechanism moving said noseplate, for the purpose set forth.

4. In a nailing-machine, the combination tached to the nose-plate, a lever connected to starting and stopping mechanism, a bar connecting said toggle-joint and lever, for operation substantially as described.

5. Ina nailing-machine, a revolving cam,

and also permits the stock to be moved freely of a movable nose-plate, a toggle-joint ata projection on the periphery of said cam, a groove in said projection, another groove in said cam opposite to said groove, a lever having one part extending on one side of the center of the cam, and another part extending on the opposite side of the center of the cam, one of said parts operated by said projection to move the lever in one direction, and the other part operated by the bottom of the latter groove to move the lever in the opposite direction, for the purpose set forth.

6. In a nailing-machine, in combination, a revolving shaft, a cam g on said shaft, a block carrying cam-rollers fand f one of the camrollers carried above the center of the shaft and the other carried below the center of the shaft, arms g, h and h on said block, one arm serving as a guide to the block, levers connected to the other arms for operation thereof, for the purpose set forth.

7. In an adjustable stock-feeding mechanism in a nailing-machine, in combination, alever having a lateral motion,a longitudinal slot in said lever,a stud havingtwo shank portions, one of the portions extending through said slot and adapted to be adjusted and secured in position in the slot, a sloping part of the frame of the machine, a vertical slot in the sloping part, a stud extending through the vertical slot in the sloping part and adapted to be secured in position and adjusted vertically, a bearing in the latter stud for the other shank portion of the former stud, for operation substantially as described.

8. In a nailing-machine, in combination, a revolving shaft, a cam mounted on said shaft, a lever moved laterally by said cam and having a longitudinal slot, a stud extending through said slot and adapted to be moved in the slot and secured in its position and holding said lever in position, a sloping part of the frame of the machine, a vertical slot in the sloping part, a stud extending through the slot in the sloping part and adapted to be moved in the slot and secured in its position, and the first stud secured to the latter stud, a block having a groove and connected to the lower end of said lever having the longitudinal slot, alever extending through said groove and moved laterally by said block, a block connected to the latter lever, a cam giving a reciprocating motion to the latter block, an awl-carried by the latter lever and thereby given vertical and lateral motions, for the purpose set forth.

9. In a nailing-machine, in combination, a revolving shaft, a cam 7' on said shaft, a lever j operated by said cam, cam-rollers k and carried by said lever, a longitudinal slot- 70 in the lever, a fork to at the lower end of the lever, a sloping part i of the frame, a slot 29 in the sloping part, adjustable studs 70 and t secured to each other and kept in position in the slots 717 and 6 respectively, a block 76 having a groove m, a roller it having its bearings in the block 70, the fork u fitting over said roller, a lever g extending through the groove m and adapted to be moved laterally by the block 70, a block 9 connected to the lever gr by an arm h, cam-rollers and f carried by the block 9 a cam g mounted on a shaft a and giving a vertical motion to the block g an awl carried by the lever 9 for the purpose set forth.

10. Ina nailing-machine, in combination, a lever, means to operate said lever, a slot in said lever, a gear, a slot in said gear, a roller in the two said slots, a stock-support, connection between said gear and stock-support, said connection operated by said gear to periodically depress said stock-support, for the purpose set forth.

11. In anailing-machine, in combination, a lever having one end forked, a stud through the forked end on which the lever is turned, a semicircular slot through the sides of the forked end, means to give a vertical motion to said lover, a gear hung in the forked end of said lever and on said stud, a semicircular slot in said gear in line With the first slot, one side of the first slot and the opposite side of the latter slot eccentric to each other, aroller in said slots periodically locking said lever and gear together and periodically unlocking them, means to adjust the roller to lock and unlock said lever and gear at any desired time of the movement of the lever, a rod provided with a rack having teeth engaging said gear, whereby the rod is moved periodically up and down, a stock-support connected with said rod.

12. In anailing-machine, in combination, a revolving shaft, a cam on said shaft, a rod depressed periodically by said cam, a lever depressed by said rod, means to move said lever upward, one end of said lever forked and hung on a stud,a semicircular slot through the sides of said forked end, a gear hung on said stud and in the forked end of said lever, a semicircular slot in the gear in line with the other slot, one side of the latter slot eccentric to the opposite side of the first said slot, a roller placed in said slots, said roller periodically locking and unlocking the lever and segment-gear, adjustable bolts under said roller, unlocking the roller and upholding it before being locked,a rod provided with a rack having teeth engaged by said gear, a stocksupport connected with the rod provided with the rack, for the purpose set forth.

13. In anailing-machine, in combination, a revolving shaft, a cam m on the shaft, arod m depressed by said cam, a lever W depressed by said rod, a spring upholding the lever no, one end of the lever forked and hung on a stud n and havingaslotn, a gear on in the forked end of the lever m and hung on the stud n, a slot 0 in said gear having its side 0 eccentric to the opposite side 0 of the slot a a roller m in said slot, said roller locking and unlocking said lever and gear, adjustable bolts 0 regulating the operation of the roller m springs bearing against the two subscribing Witnesses, on this 2d day of roller, a rod 0 provided With the rack n, said February, A. D. 1897. rack engaged by the gear m a stock-support i T 4 T a connected to the rod 0 by the treadle p DDMN THEOPHH'US M 5 for operation substantially as described. Witnesses:

In testimony whereof I have signed my LOUIS A. SOMERS,

name to this specification, in the presence of W. H. COVERT. 

